315201109 has 2 divisors, whose sum is σ = 315201110. Its totient is φ = 315201108.

The previous prime is 315201101. The next prime is 315201121. The reversal of 315201109 is 901102513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 277722225 + 37478884 = 16665^2 + 6122^2 .

It is a cyclic number.

It is not a de Polignac number, because 315201109 - 2³ = 315201101 is a prime.

It is a super-2 number, since 2×315201109² = 198703478229659762, which contains 22 as substring.

It is equal to p_17030272 and since 315201109 and 17030272 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 315201109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315201101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157600554 + 157600555.

It is an arithmetic number, because the mean of its divisors is an integer number (157600555).

Almost surely, 2^315201109 is an apocalyptic number.

It is an amenable number.

315201109 is a deficient number, since it is larger than the sum of its proper divisors (1).

315201109 is an equidigital number, since it uses as much as digits as its factorization.

315201109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 22.

The square root of 315201109 is about 17753.9040495323. The cubic root of 315201109 is about 680.5539812311.

The spelling of 315201109 in words is "three hundred fifteen million, two hundred one thousand, one hundred nine".